Tags: Use of relevant tags is important from the SEO perspective. It helps the search engine track your post based on the tags you use.
For Business Blogs, include product messages in your blog posts clubbed with engaging content .This increases your social shares.
Content is the king - In the blogging world so diverse and big, you need to establish yourself with a distinction. the only road to it is good, original and valuable content. Be creative, different and surprise your readers once in a while.